The heater core has no gasket. If it is leaking, it must be replaced.
No
head gasket or piston rings, have a leak down test done in it to confirm gasket failure
You Don't!
To remove the heater core from a 1973 Ford F100, first disconnect the battery and drain the coolant from the radiator. Remove the dashboard and the heater box to access the heater core, which is typically secured with screws or clips. After disconnecting the heater hoses from the engine compartment, carefully pull out the heater core from the housing. Finally, reverse the process to install the new core, ensuring all connections are secure.
To change the heater core in a 1973 Lincoln Continental Mark IV, first, disconnect the battery and drain the coolant from the radiator. Remove the dashboard and the heater box that houses the heater core, which requires detaching various components like the control cables and ducts. Take out the old heater core and replace it with the new one, ensuring proper sealing. Reassemble the heater box and dashboard, refill the coolant, and reconnect the battery.
oil and a sump gasket
It may not have one on a '73. If it does it would be under the dash.
In 1973, approximately 150,000 Chevrolet Blazers were produced. The first-generation Blazer was introduced in 1969, and production continued until 1991, with varying numbers produced each year. The 1973 model year falls within a peak production period for this popular SUV.
Yes. For street use you may want to use the head gasket as a template to add the steam holes.
It needs a new thermo couple
I think. it would be the knobs on each side of the parking brakes(if they are still there in that year) pull them both up (i think) while the motor is on and you should get warm air to come out. You probably CAN'T turn it on, unless:the heater boxes, which are sheet metal pieces wrapped around the cast-iron exhaust manifolds, are intactthe control levers on the sides of the heater boxes are there, the butterfly valve they control is there, and the cable running to the lever is there, intact and connected at both endsthe hoses connecting the heater channels to the heater boxes are there and intactthe heater channels don't have any holes in themand even if all that stuff is right, you STILL don't get much heat out of them!
park,reverse,neutral,drive,low2,and low1